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Vav1/2/3 comprise a protein family with guanyl nucleotide exchange activity for Rho and Rac as well as with motifs conferring adapter activity. Biologically, Vav1 plays a critical role in hematologic cell signaling, whereas Vav2/3 have a wider tissue distribution, but all 3 Vav proteins are implicated in cancer development. A structural feature of Vav1/2/3 is the presence of an atypical C1 domain,...
Diacylglycerol (DAG) activates the eight conventional and novel isozymes of protein kinase C (PKC) by binding to their C1 domains. The crystal structure of PKCβII in a partially activated conformation showed how the C1B domain regulates activity by clamping a helix in the C-terminal AGC extension of the kinase domain. Here we show that the global three-dimensional shape of the conventional and novel...
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